Steven S. Gubser (1972–2019) was professor of physics at Princeton University. His books include The Little Book of String Theory (Princeton). Frans Pretorius is professor of physics at Princeton. He lives in Princeton, New Jersey.

"[A] concise introduction to one of the Universe's strangest phenomena. . . . It is probably just about right for a person who wants to acquire a rudimentary understanding of black holes, while also being a good introduction and stimulant for someone who might decide to explore further."---Anthony Toole, Waterstones --- "Excellent. . . . This lovely book is a rollercoaster ride through time and space, taking the reader right through the ins and outs of peculiar objects like black holes, white holes, and even wormholes, with bouts of ‘real -life' illustrations to keep the experience (somewhat) grounded. All of this and much more in less than 200 pages, which speaks volumes about the authors’ ability to condense an eminently complex subject into a relatable form. Prepare for a lot of weirdness but if you can make it to the end, you might feel a little shiver after grazing the last chapter." --- "The book is beautifully, if densely, written, with the authors sending Alice and Bob on many adventures through space-time and tossing them willy-nilly into black holes. Reading it requires significant effort, but is rewarding for its sense of just how utterly bonkers the universe is, and how significant gaps in our knowledge remain."---Cait MacPhee, Times Higher Education --- "It's clear that [this book] really will take the knowledge of anyone with a serious interest in black holes up to the next level. . . . I wholeheartedly recommend this book for a popular science reader who wants to get more depth on the nature of black holes and how general relativity made it possible to conjure them up."---Brian Clegg, Popular Science --- "The Little Book of Black Holes will more than satisfy anyone who has heard about them and wants to know more." --- "Princeton physics professors Gubser and Pretorius condense their significant expertise in black holes into an easily digestible analysis. . . . The authors excel at describing these complex scientific ideas within relatable contexts, and they provide readers with detailed explanations of general and special relativity before discussing the cutting-edge experiments and theories that make black holes more intriguing than ever. . . . Don't be fooled by its ‘little' title; these renowned physicists deliver a robust and thrilling book that will draw readers in as surely as any event horizon." --- "The thrills come thick and fast, not least when a hypothetical probe nearing a singularity is 'squished and stretched into an infinitesimally thin line'."---Barb Kiser, Nature --- "Gubser and Pretorius offer clarity on a difficult topic, with a healthy dose of wonder to boot." --- "Frans Pretorius, Winner of the 2017 New Horizons Prize in Fundamental Physics" --- "Steven S. Gubser, Winner of the 2017 Simons Investigator Award in Physics, Simons Foundation"